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X64 Define required for Interop

Discussion in 'Unity 5 Pre-order Beta' started by topherr, Jan 1, 2015.

  1. topherr

    topherr

    Joined:
    Jun 1, 2013
    Posts:
    25
    Some external libraries need to change calling conventions for Interop on x86 and x86_64. This requires a define for compilation.
     
    topherr, Jan 1, 2015
    #1

  2. Tomas1856

    Tomas1856

    Unity Technologies

    Joined:
    Sep 21, 2012
    Posts:
    3,658
    Could you give an example of those different calling conventions?
     
    Tomas1856, Jan 1, 2015
    #2

  3. topherr

    topherr

    Joined:
    Jun 1, 2013
    Posts:
    25
    Sure.

    For Steamworks.NET (https://github.com/rlabrecque/Steamworks.NET) Unity 5 currently doesn't work with the x64 version without changing to CallingConvention.ThisCall. CallingConvention.ThisCall crashes the x86 version, and requires StdCall to work. Couldn't tell you why, Mono just falls over.

    I didn't write this library, but it has this to say on the matter:

     
    topherr, Jan 1, 2015
    #3
    DanSuperGP likes this.